<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>Title</title>
</head>
<script src="../../js/jquery-1.11.2.min.js"></script>
<script>
    $(function() {
     $(window).resize( $("#left").height($("#right").height()));
        $("#left").height($("#right").height());
    });
</script>
<body>
<div style="background-color: red;height: 200px;" id="right"></div>
<div style="background-color: yellow;height:100px" id="left"></div>
</body>
</html>
